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Cloning a MySQL database on the same MySql instance
...ript which copies my current database sitedb1 to sitedb2 on the same mysql database instance. I know I can dump the sitedb1 to a sql script:
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How to debug Lock wait timeout exceeded on MySQL?
... Locking and Mutex Information.
Here is a sample from one of my clients:
mysql> show engine innodb status\G
*************************** 1. row ***************************
Type: InnoDB
Name:
Status:
=====================================
110514 19:44:14 INNODB MONITOR OUTPUT
===================...
Binary Data in MySQL [closed]
How do I store binary data in MySQL ?
9 Answers
9
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ASP.NET Identity reset password
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Is there any way to do this directly in SQL? I'd love to hand my DBA a sproc to call when needed instead of an executable.
– Mark Richman
Feb 24 '15 at 19:19
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MySQL: Fastest way to count number of rows
Which way to count a number of rows should be faster in MySQL?
12 Answers
12
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Rails 3: Get Random Record
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Thing.first(:order => "RANDOM()") # For MySQL :order => "RAND()", - thanx, @DanSingerman
# Rails 3
Thing.order("RANDOM()").first
or
Thing.first(:offset => rand(Thing.count))
# Rails 3
Thing.offset(rand(Thing.count)).first
Actually, in Rails 3 all examples ...
How the single threaded non blocking IO model works in Node.js
... behavior) most functions that you would use will have callbacks.
Edit
The SQL query is taken from mysql library. It implements callback style as well as event emitter to queue SQL requests. It does not execute them asynchronously, that is done by the internal libuv threads that provide the abstract...
ros 基本调试 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...条请牢记：
■计划好哪个连接是DTE，哪个是DCE，它们各包括什么类型，牢记你在这两台电脑上各使用了哪个端口（1还是2）。
■制作正确的null modem线。制作null modem线有多种方法，采用不同的方法做出来的线都是不一样的。
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How to allow remote connection to mysql
I have installed MySQL Community Edition 5.5 on my local machine and I want to allow remote connections so that I can connect from external source.
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Fastest way to determine if record exists
...sting point. I'm not sure if an Index exists on this field, and my newbish SQL doesn't know how to find out. I am working with this DB from Java via JDBC and the database is remotely located in a colo somewhere. I've only been provided a "database summary" which just details which fields exist in ea...